# Range

## Background

This puzzle appears to be a Nikoli original appearing in 1991.

## Puzzle and Goal

An unsolved puzzle consists of a rectangular grid with numbers in some of the cells.

The goal is to color in some of the cells to satisfy the clues.

## Rules

The solved grid must satisfy the following conditions:

Numbered clues represent the number of orthogonal neighbors (including itself) that the number can see; colored cells block sight lines.

No two orthogonal neighbors are colored; no numbered cell is colored.

All uncolored cells are orthogonally contiguous.

## Other Names

Blackberrier Jam; Kurodoko; Kuromasu

## Playable Online